dealing with public discussion of his size. eating a doughnut on "letterman." and chatting candidly with oprah, who has had her own battles with her weight. >> it's like a drug for me. >> i think it's probably something similar for me. i just, you know, find myself just eating all the wrong things. >> reporter: now, he is showing that aside from humor and humility, he is willing to use another weapon in the ongoing discussion over his weight, his withering verbal skills. >> this is just another hack who wants five minutes on tv. >> reporter: for "good morning america," dan harris, abc news, new york. >> you can see, he was hot yesterday with that. let's get the weather, now, from sam. >> we're going to walk over to the three monitors if the cameras will follow me. we're going to set it up for you. this is the northern system where the rain is pulling out of wichita, omaha, and then hits the cold air. it turns into snow. and we're getting reports of heavier snow that the moving through michigan right now. this is the northern part of the system. the southern part has been causing big rains in the deep south. earlier this morning, there was a tornado warning in southern louisiana.